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TPS2121: TPS2121RUXR原理图检查

Part Number: TPS2121

如上有两组电源,VIN1是电池供电12V~16V, VIN2是5V供电, 目前设计的是两种电源自由切换,高电压优先供电; 

1、只有VIN1 输出VIN1,若再接入VIN2,   则输出VIN1

2、只有VIN2,输出VIN2,若接入VIN1, 则输出VIN1

3、VIN1、VIN2同时存在, 输出VIN1;